Retinaldehyde is a naturally occurring compound that plays a crucial role in the visual cycle. It is a form of vitamin A and is essential for the conversion of light into visual signals in the retina. When light hits the retina, retinaldehyde undergoes a chemical change, allowing us to see. In addition to its role in vision, retinaldehyde is also used in skincare products for its anti-aging properties. It helps to promote cell turnover and improve skin texture, making it a popular ingredient in cosmetics and dermatology. Its effectiveness is often compared to that of retinol, but it is considered to be less irritating.